Electrode sheet turning mechanism

ABSTRACT

The present utility model discloses an electrode sheet turning mechanism, including a housing, a conveyor belt, a driving mechanism, and a stripping member. The housing has a suction cavity, and forms an arc-shaped guide surface. A material feeding region and a material discharging region are formed on the arc-shaped guide surface, which is further provided with first suction holes. Second suction holes run through the conveyor belt. The conveyor belt is wound on the arc-shaped guide surface, and seals the first suction holes. The driving mechanism is for driving the conveyor belt to move. The stripping member is for extending to the position between the conveyor belt and the electrode sheet. In the present utility model, the electrode sheet can be automatically turned.

CROSS REFERENCE OF RELATED APPLICATIONS

The present application is a continuation-application of International (PCT) Patent Application No. PCT/CN2019/072777, titled “ELECTRODE SHEET TURNING MECHANISM”, filed on Jan. 23, 2019, which claims foreign priorities of Chinese Patent Application No. 201822007745.7, titled “ELECTRODE SHEET TURNING MECHANISM”, filed on Nov. 30, 2018, the entire contents of which are hereby incorporated by reference.

TECHNICAL FIELD

The present utility model relates to a turning mechanism, and in particular, to an electrode sheet turning mechanism.

BACKGROUND

Currently, in an electrode sheet production process, structures on both sides of an electrode sheet need to be photographed and detected, to determine whether the electrode sheet is qualified. However, an existing electrode sheet detection apparatus can perform detection on only one side of an electrode sheet. Consequently, after detection is performed on one side, the electrode sheet generally needs to be manually turned for detection on the other side. When a detection amount is large, this manual turning manner easily causes fatigue in operations, affecting working efficiency.

SUMMARY

To overcome the disadvantage of the existing technology, an objective of the present utility model is to provide an electrode sheet turning mechanism that can automatically turn an electrode sheet to improve efficiency.

The present utility model is implemented by using the following technical solution:

An electrode sheet turning mechanism includes a frame, a housing, a conveyor belt, a driving mechanism, a stripping member, and a gas pumping machine. The housing is mounted on the frame, and has a suction cavity. An arc-shaped guide surface is formed on the housing. In the extension direction of the arc-shaped guide surface, a material feeding region is formed on the upper side of the arc-shaped guide surface, and a material discharging region is formed on the lower side of the arc-shaped guide surface. Multiple first suction holes disposed in a staggered manner are provided on the arc-shaped guide surface. The first suction holes communicate with the suction cavity and the exterior. The gas pumping machine is for drawing a gas in the suction cavity. The conveyor belt is for conveying an electrode sheet, and multiple second suction holes disposed in a staggered manner run through the conveyor belt. The conveyor belt is further wound on the arc-shaped guide surface, and seals the first suction holes. The driving mechanism is for driving the conveyor belt to move in the extension direction of the arc-shaped guide surface. When the electrode sheet moves along with the conveyor belt to the material discharging region, the stripping member is for extending to the position between the conveyor belt and the electrode sheet.

Further, multiple plate stiffeners are fixed in the suction cavity.

Further, a longitudinal section of the arc-shaped guide surface is semicircular.

Further, multiple electrode sheet placement areas successively spaced and arranged in the extension direction of the conveyor belt are formed on the conveyor belt, and the second suction holes are disposed on the electrode sheet placement areas.

Further, the conveyor belt is a toothed conveyor belt. The driving mechanism includes a first conveying roller, a second conveying roller, and a rotary motor. The first conveying roller and the second conveying roller each are pivotally connected to the frame. A drive gear is fixed on the second conveying roller. The toothed conveyor belt is wound on the first conveying roller and the drive gear, and meshes with the drive gear. An output shaft of the rotary motor is connected to the second conveying roller through transmission.

Further, the electrode sheet turning mechanism further includes a tension wheel assembly for tensioning the toothed conveyor belt.

Further, there are multiple such toothed conveyor belts, and the multiple toothed conveyor belts are successively arranged in the length direction of the first conveying roller. Multiple such drive gears are fixed on the second conveying roller, and the multiple drive gears are disposed in a one-to-one correspondence with the multiple toothed conveyor belts.

Further, the stripping member is fixed on the arc-shaped guide surface, and extends in the extension direction of the arc-shaped guide surface.

Further, the height, of the stripping member, protruding from the arc-shaped guide surface progressively increases from one end near the material feeding region to the other end of the stripping member.

Compared with the existing technology, the present utility model has the following beneficial effect:

In the present utility model, the first suction holes and the second suction holes are disposed. As such, the electrode sheet can be sucked onto the conveyor belt by the gas pumping machine by drawing a gas in the suction cavity. Subsequently, driven by the driving mechanism, the electrode sheet moves in an arc along with the conveyor belt, and the orientation of the electrode sheet is adjusted. After the stripping member extends to the position between the conveyor belt and the electrode sheet, the electrode sheet is free from the suction of the suction cavity and can be stripped from the conveyor belt. Afterwards, the electrode sheet falls down on the side backing onto the conveyor belt under action of the gravity of the electrode sheet, thereby turning the electrode sheet.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram 1 of an overall structure of an electrode sheet turning mechanism according to the present utility model;

FIG. 2 is a schematic diagram 2 of an overall structure of an electrode sheet turning mechanism according to the present utility model;

FIG. 3 is a schematic diagram 3 of an overall structure of an electrode sheet turning mechanism according to the present utility model;

FIG. 4 is an exploded diagram 1 of an electrode sheet turning mechanism according to the present utility model;

FIG. 5 is an exploded diagram 2 of an electrode sheet turning mechanism according to the present utility model;

FIG. 6 is an exploded diagram 3 of an electrode sheet turning mechanism according to the present utility model; and

FIG. 7 is a cutaway drawing of a housing according to the present utility model.

-   -   In the figures: 10: housing; 11: suction cavity; 12: arc-shaped         guide surface; 121: first suction hole; 20: conveyor belt; 21:         second suction hole; 30: driving mechanism; 31: first conveying         roller; 32: second conveying roller; 33: drive gear; 40:         stripping member; 50: tension wheel assembly.

DESCRIPTION OF EMBODIMENTS

The following further describes the present utility model with reference to the accompanying drawings and specific implementations. It should be noted that, the embodiments or technical features described below can be randomly combined to form new embodiments, provided that there is no conflict.

An electrode sheet turning mechanism shown in FIG. 1 to FIG. 7 includes a frame, a housing 10, a conveyor belt 20, a driving mechanism 30, a stripping member 40, and a gas pumping machine. The housing 10 is mounted on the frame, and has a suction cavity 11. An arc-shaped guide surface 12 is formed on the housing 10. In the extension direction of the arc-shaped guide surface 12, a material feeding region is formed on the upper side of the arc-shaped guide surface 12, and a material discharging region is formed on the lower side of the arc-shaped guide surface 12. Multiple first suction holes 121 disposed in a staggered manner are provided on the arc-shaped guide surface 12. The first suction holes 121 communicate with the suction cavity 11 and the exterior. The gas pumping machine is for drawing a gas in the suction cavity 11. The conveyor belt 20 is for conveying an electrode sheet, and multiple second suction holes 21 disposed in a staggered manner run through the conveyor belt 20. The conveyor belt 20 is further wound on the arc-shaped guide surface 12, and seals the first suction holes 121. The driving mechanism 30 is for driving the conveyor belt 20 to move in the extension direction of the arc-shaped guide surface 12. When the electrode sheet moves along with the conveyor belt 20 to the material discharging region, the stripping member 40 is for extending to the position between the conveyor belt 20 and the electrode sheet.

Based on the previous structure, when the electrode sheet turning mechanism is used, the electrode sheet is placed on the conveyor belt 20 and is disposed by sealing the second suction holes 21. In this case, the conveyor belt 20 seals the first suction holes 121 and the electrode sheet seals the second suction holes 21. The gas pumping machine draws the gas in the suction cavity 11, and the pressure inside the suction cavity 11 is lower than the external pressure, so that the electrode sheet is sucked onto the conveyor belt 20. Afterwards, the driving mechanism 30 drives the conveyor belt 20 to move in the direction from the material feeding region to the material discharging region. The electrode sheet moves along with the conveyor belt 20 in the extension direction of the arc-shaped guide surface 12, and the orientation of the electrode sheet is adjusted. When the electrode sheet moves along with the conveyor belt 20 to the material discharging region, the stripping member 40 extends to the position between the conveyor belt 20 and the electrode sheet, and keeps extending between the conveyor belt 20 and the electrode sheet as the driving mechanism 30 continuously drives the conveyor belt 20. The stripping member 40 keeps the electrode sheet away from the conveyor belt 20, that is, enables the electrode sheet to overcome the suction of the suction cavity 11 and be stripped from the conveyor belt 20. Then, the electrode sheet falls down on the side backing onto the conveyor belt 20 under action of the gravity of the electrode sheet, to complete automatic turning of the electrode sheet, thereby reducing labor intensity and improving efficiency.

It should be noted herein that, in practice, the pore size of the second suction holes 21 is less than the pore size of the first suction holes 121. Therefore, the larger pore size of the first suction holes 121 can ensure action of the suction cavity 11 on the conveyor belt 20 when the gas pumping machine draws the gas in the suction cavity 11, and the smaller pore size of the second suction holes 21 can control the speed of entering the suction cavity 11 by an external gas when the electrode sheet is stripped from the conveyor belt 20, thereby ensuring suction action of the suction cavity 11.

To improve the strength of the housing 10, preferably, multiple plate stiffeners are fixed in the suction cavity 11. In actual mounting, the stiffeners are fixedly connected to the cavity wall of the suction cavity 11. Moreover, the stiffeners are disposed in the suction cavity 11, so that idle space in the suction cavity 11 can be reduced, and drawing of the air from the suction cavity 11 by the gas pumping machine can be further accelerated, thereby improving efficiency.

Specifically, a longitudinal section of the arc-shaped guide surface 12 is semicircular.

Further, multiple electrode sheet placement areas successively spaced and arranged in the extension direction of the conveyor belt 20 are formed on the conveyor belt 20, and the second suction holes 21 are disposed on the electrode sheet placement areas. In this way, electrode sheets can be arranged in order, and the stripping member 40 can strip the electrode sheets from the conveyor belt 20 in order, thereby avoiding an overlap between the electrode sheets.

Specifically, the conveyor belt 20 is a toothed conveyor belt 20. The driving mechanism 30 includes a first conveying roller 31, a second conveying roller 32, and a rotary motor. The first conveying roller 31 and the second conveying roller 32 each are pivotally connected to the frame. A drive gear 33 is fixed on the second conveying roller 32. The toothed conveyor belt 20 is wound on the first conveying roller 31 and the drive gear 33, and meshes with the drive gear 33. An output shaft of the rotary motor is connected to the second conveying roller 32 through transmission. In this way, the rotary motor drives the second conveying roller 32 to rotate, and the second conveying roller 32 drives, by linkage, the drive gear 33 to rotate. In this case, the toothed conveyor belt 20 moves under action of the drive gear 33.

More specifically, the electrode sheet turning mechanism further includes a tension wheel assembly 50 for tensioning the toothed conveyor belt 20, to ensure that the toothed conveyor belt 20 is pressed closely against the arc-shaped guide surface 12. The tension wheel assembly 50 can use the following structure: The tension wheel assembly 50 includes a bracket fixed on the frame and a tension wheel pivotally connected to the bracket, and the tension wheel rolls to fit the surface of the toothed conveyor belt 20.

Further, there are multiple such toothed conveyor belts 20, and the multiple toothed conveyor belts 20 are successively arranged in the length direction of the first conveying roller 31. Multiple such drive gears 33 are fixed on the second conveying roller 32, and the multiple drive gears 33 are disposed in a one-to-one correspondence with the multiple toothed conveyor belts 20.

The stripping member 40 is fixed on the arc-shaped guide surface 12, and extends in the extension direction of the arc-shaped guide surface 12.

Specifically, the height, of the stripping member 40, protruding from the arc-shaped guide surface 12 progressively increases from one end near the material feeding region to the other end of the stripping member 40. In this way, the end with a smaller height ensures that the stripping member 40 smoothly extends into the position between the electrode sheet and the conveyor belt 20. However, increasing the height progressively can enlarge the distance between the electrode sheet and the conveyor belt 20, thereby ensuring that the electrode sheet can be free from the suction of the suction cavity 11.

The previous stripping member 40 can be a stripping block, a stripping plate, or a stripping sheet.

The previous implementations are merely example implementations of the present utility model, and are not intended to limit the protection scope of the present utility model. Any non-substantial change and replacement made by a person skilled in the art on the basis of the present utility model falls within the protection scope claimed by the present utility model. 

What is claimed is:
 1. An electrode sheet turning mechanism, comprising a frame, a housing, a conveyor belt, a driving mechanism, a stripping member, and a gas pumping machine; the housing is mounted on the frame, and has a suction cavity; an arc-shaped guide surface is formed on the housing; in the extension direction of the arc-shaped guide surface, a material feeding region is formed on the upper side of the arc-shaped guide surface, and a material discharging region is formed on the lower side of the arc-shaped guide surface; multiple first suction holes disposed in a staggered manner are provided on the arc-shaped guide surface; the first suction holes communicate with the suction cavity and the exterior; the gas pumping machine is for drawing a gas in the suction cavity; the conveyor belt is for conveying an electrode sheet, and multiple second suction holes disposed in a staggered manner run through the conveyor belt; the conveyor belt is further wound on the arc-shaped guide surface, and seals the first suction holes; the driving mechanism is for driving the conveyor belt to move in the extension direction of the arc-shaped guide surface; and when the electrode sheet passes through the material discharging region along with the conveyor belt, the stripping member is for guiding the electrode sheet to move in a direction away from the conveyor belt, so that the electrode sheet is stripped from the conveyor belt.
 2. The electrode sheet turning mechanism according to claim 1, wherein multiple plate stiffeners are fixed in the suction cavity.
 3. The electrode sheet turning mechanism according to claim 1, wherein a longitudinal section of the arc-shaped guide surface is semicircular.
 4. The electrode sheet turning mechanism according to claim 1, wherein multiple electrode sheet placement areas successively spaced and arranged in the extension direction of the conveyor belt are formed on the conveyor belt, and the second suction holes are disposed on the electrode sheet placement areas.
 5. The electrode sheet turning mechanism according to claim 1, wherein the conveyor belt is a toothed conveyor belt; the driving mechanism comprises a first conveying roller, a second conveying roller, and a rotary motor; the first conveying roller and the second conveying roller each are pivotally connected to the frame; a drive gear is fixed on the second conveying roller; the toothed conveyor belt is wound on the first conveying roller and the drive gear, and meshes with the drive gear; and an output shaft of the rotary motor is connected to the second conveying roller through transmission.
 6. The electrode sheet turning mechanism according to claim 5, wherein the electrode sheet turning mechanism further comprises a tension wheel assembly for tensioning the toothed conveyor belt.
 7. The electrode sheet turning mechanism according to claim 6, wherein there are multiple such toothed conveyor belts, and the multiple toothed conveyor belts are successively arranged in the length direction of the first conveying roller; and multiple such drive gears are fixed on the second conveying roller, and the multiple drive gears are disposed in a one-to-one correspondence with the multiple toothed conveyor belts.
 8. The electrode sheet turning mechanism according to claim 1, wherein the stripping member is fixed on the arc-shaped guide surface, and extends in the extension direction of the arc-shaped guide surface.
 9. The electrode sheet turning mechanism according to claim 8, wherein the height, of the stripping member, protruding from the arc-shaped guide surface progressively increases from one end near the material feeding region to the other end of the stripping member. 